Prevent leaks and keep your Nikon D850 camera safe in Aquatica's AD850 Underwater Housing with the SURVEYOR Moisture and Vacuum Sensor. This unit is sensitive to atmospheric pressure, and it allows you to confirm watertight integrity before diving. An included compensation function improves accuracy by ensuring that changes in ambient or internal temperature will not cause incorrect readings.

Once your camera is installed, simply push the actuation button on the sensor's circuit board. With the optional valve and extracting pump, which are part of the complete Vacuum Circuitry Kit, you can actually remove excess air to create a vacuum in the housing.

For Nikon D850 Camera    Confirm Watertight Integrity before Dive    Sensitive to Atmospheric Pressure    Audible Alarm and LED Indicators    Temperature Compensation for Accuracy    Use with Optional Vacuum Valve and Pump

• LED light will turn green for 2 seconds to confirm actuation
• Once a complete vacuum is achieved, the LED will blink in green again for 2 seconds
• During your dive, the LED will flash in green every 5 seconds, indicating system integrity
• If the pressure level is increasing but a vacuum has not yet been achieved, the LED will begin to flash in orange
• Should a slight loss in pressure be detected, the LED will start to flash in orange to warn you
• If your housing system is failing to maintain a vacuum, or the slightest amount of water has made contact with the sensor probes, an audible alarm will go off and the LED will also flash rapidly in red
• Advanced Aquatica circuit has temperature compensation included, so changes in ambient or internal temperature will not cause incorrect readings
• Onboard actuation button is for the vacuum only; your alarm is always on
• With the optional valve and extracting pump, which are part of the Vacuum Circuitry Kit, you can remove excess air to create a vacuum in your housing
• Housing can be purchased with this system pre-installed at the factory before shipment, in which case this one will serve as a spare or replacement
• If you purchased the housing without this kit initially, you can now add it on
• This SURVEYOR system may be used to replace the discontinued #20023 moisture alarm found in older housings

Related Questions and Answers

Q: 1. Will it work with the Z1 51GB?

A: No, this Underwater Housing TW-1 is not compatible with the Z1 Ricoh model camera.

Q: 2. hi, May I know what is the distance from the opening in the camera to the opening of the housing? Is the vacuum check system same as the Aquatica surveyor kit? Lastly, the housing will be tested before shipping right?

A: Aquatica pressure test all housings before shipping. The included vacuum check system with the Aquatica Underwater Housing for Sony Alpha a7R III or a7 III with Vacuum Check System is the SURVEYOR pressure valve and vacuum pump. To check housing specs that are not listed under the spec tab email us at uw@bhphoto.com.

Q: 3. how much boring lub do you get?

A: It's a lot more than I received with the camera housing. The size of the container is roughly the size of 12-each 50 cent pieces or 1.5 X 0.75

Q: 4. I want to use this monitor off-camera. How long can the HDMI cable be between camera and monitor?

A: Upon inspection, it appears that the cable that comes with it is installed with the unit, so the length of the cable that is on it is the length that is used. Unfortunately according to Aquatica, because of all of the wiring and connections, this is the longest they could safely make the cable

Q: 5. Is this housing compatible with Samsung NX300, with 18-55mm len?

A: The Ewa-Marine D-B is compatible with the Samsung NX300, with the 18-55mm lens. The zoom range of the lens might be limited.

Q: 6. This housing is compatible with Sony A6000?

A: Yes is perfect

Q: 7. Will this work on the PT 059 housing?

A: The Olympus O-Ring for PT-058 Underwater Housing is also compatible with the PT-059 housing.

Q: 8. What size is the tripod screw mount? The theta has a smaller-than-standard size, so I would like to know if the waterproof case is the smaller Theta size or the standard tripod size.

A: The Ricoh TW-1 Underwater Housing for Theta V, S, or SC will have a standard 1/4"-20 mount at the base of the housing.

Q: 9. Would this housing fit a Panasonic FZ300 bridge camera?

A: The Panasonic Lumix DMC-FZ300 Digital Camera will fit in the Ewa-Marine D-B Underwater Housing For Mirrorless Cameras. However, the zoom range will be limited.

Q: 10. Would a Olympus E-M1 Mark II with a 12-40mm F2.8 fit?

A: No, the Ewa-Marine D-B Underwater Housing For Mirrorless Cameras will not work with the Olympus E-M1 Mark II with a 12-40mm F2.8. This one does but does not go as deep, https://bhpho.to/3S9OWSu